Table 1.
Descriptive statistics of elastic modulus (EIT), hardness (HIT) and maximum penetration depth (hmax). The size of the studied population N = 15; Min, Max and Mean are the minimum, maximum and mean values for a given sample; SD—standard deviation.
| Material | Min | Median | Max | Mean | SD | |
|---|---|---|---|---|---|---|
|
HIT [GPa] |
A | 3.80 | 4.25 | 5.06 | 4.38 | 0.48 |
| B | 4.27 | 4.51 | 5.61 | 4.74 | 0.49 | |
| C | 2.69 | 3.14 | 3.43 | 3.08 | 0.23 | |
| D | 3.80 | 4.25 | 5.06 | 4.38 | 0.56 | |
| E | 1.73 | 2.75 | 3.53 | 2.64 | 0.58 | |
| F | 3.28 | 3.39 | 3.89 | 3.48 | 0.19 | |
|
EIT [GPa] |
A | 191.11 | 203.49 | 219.51 | 203.95 | 8.2 |
| B | 201.79 | 213.98 | 228.59 | 214.79 | 7.5 | |
| C | 183.26 | 203.31 | 224.76 | 204.14 | 12.0 | |
| D | 177.82 | 190.07 | 207.38 | 190.85 | 11.2 | |
| E | 112.21 | 137.83 | 201.26 | 139.80 | 26,7 | |
| F | 112.73 | 116.07 | 127.30 | 117.23 | 4.3 | |
|
hmax [nm] |
A | 430.35 | 474.12 | 492.60 | 464.25 | 24.83 |
| B | 406.92 | 457.64 | 491.59 | 452.26 | 27.22 | |
| C | 506.40 | 536.77 | 580.32 | 542.53 | 24.89 | |
| D | 389.34 | 421.46 | 526.00 | 436.86 | 39.53 | |
| E | 488.76 | 589.51 | 803.54 | 616.52 | 99.73 | |
| F | 513.57 | 540.00 | 547.46 | 535.20 | 12.33 |